(+3 3⼀4)-(-1 1⼀2)+(-1⼀6)-(-5⼀8)+(+4 2⼀3)=? 2-(5 5⼀6)-(4 3⼀7)+(-2 1⼀6)-(6 11⼀21)=?((过程)

2024-12-13 02:53:53
推荐回答(1个)
回答1:

(+3又 3/4)-(-1又 1/2)+(-1/6)-(-5/8)+(+4又 2/3)
=3 又3/4+1 又1/2+5/8+(4又 2/3-1/6)
= 3又 3/4+5/8+(4又1/2+1又 1/2)
=4又3/8+6
=10又3/8
2-(5又 5/6)-(4 又3/7)+(-2 又1/6)-(6又 11/21)
=2-(5又5/6+2又1/6)-(4又3/7+6又11/21)
=2-8-10又20/21
=-16又20/21